The most important determinant of risk for ADR-related hospital admissions in older patients is number of drugs being taken. When considering only severe ADRs, risk is also related to age and frailty.
Moderate alcohol intake is associated with an increased risk of ADRs; this effect seems more evident among women than men, and it does not differ across age groups.
Angiotensin-converting enzyme (ACE) inhibitors reduce morbidity, mortality, hospital admissions, and decline in physical function and exercise capacity in congestive heart failure (CHF) patients. These therapeutic effects are attributed primarily to beneficial cardiovascular actions of these drugs. However, it has been suggested that ACE inhibitor-induced positive effects may also be mediated by direct action on the skeletal muscle. In particular, two recently published observational studies documented that among hypertensive subjects free of CHF, treatment with ACE inhibitors was associated with better performance and muscular outcomes and genetic studies also support the hypothesis that the ACE system may be involved in physical performance and skeletal muscle function. Effects on the skeletal muscle are probably mediated by mechanical, metabolic, anti-inflammatory, nutritional, neurological and angiogenetic actions of these drugs. These studies may have major public health implications for older adults, as consequence of the fact that, in this population, gradual loss of muscle mass and muscle strength can play a key role in the onset and progression of disability. Therefore, if findings of observational studies will be later confirmed in randomized controlled trials, ACE inhibitors could represent an effective intervention to prevent physical decline in the elderly, leading to greater autonomy in this growing population.
Loss of physical function in older adults may be, at least in part, explained by sarcopenia, a phenomenon characterized by a reduction in number and size of muscle fibres and by increase in interstitial fat and connective tissue. Lifestyle intervention (i.e. physical activity and nutrition) have shown to impact on sarcopenia. However, several drugs were suggested, with various levels of scientific evidence, to have an impact on muscle outcomes. In this study we reviewed the effect of six classes of drugs on sarcopenia and muscular outcomes in older adults. We decided to focus our review on two commonly drugs which have recently showed promising effects on muscular outcomes in older adults (ACE inhibitors and statins) and on four drugs whose effect on skeletal muscle was already largely studied (creatine, Growth Hormone, testosterone, estrogens and tibolone).
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